A British woman suffering from multiple sclerosis has won what her lawyers describe as a 'landmark victory' in the House of Lords to have the law on assisted suicide clarified.

46-year-old Debbie Purdy who is considering going to Switzerland to end her life, had gone before the British courts seeking an assurance that her husband would not be prosecuted.

The offence of assisting someone's death carries a potential sentence of 14 years in prison but no-one has ever been prosecuted.